{"id":2979,"date":"2026-01-25T20:43:16","date_gmt":"2026-01-25T18:43:16","guid":{"rendered":"https:\/\/peptelia.com\/product-quality-testing\/"},"modified":"2026-09-24T10:02:18","modified_gmt":"2026-09-24T08:02:18","slug":"product-quality-testing","status":"publish","type":"page","link":"https:\/\/peptelia.com\/en\/product-quality-testing\/","title":{"rendered":"Quality & Lab Testing"},"content":{"rendered":"
\n
\n
Quality & Lab Testing<\/span><\/p>\n

Don’t trust.
Verify.<\/em><\/h1>\n

Quality is only worth something if it is documented in a way that can be traced. That is why we rely on batch-level assignment and on HPLC as well as UV\/Vis analyses in our own laboratory.<\/p>\n

View products \u2192<\/a>Understand the COA \u2193<\/a><\/div>\n<\/div>\n<\/section>\n
\n
The process<\/span><\/p>\n

From sample to verifiable result.<\/h2>\n
\n
01<\/b><\/p>\n

Assign the batch<\/h3>\n

Every tested sample is assigned to a specific product batch. That is the basis for documentation that can be traced.<\/p>\n<\/article>\n

02<\/b><\/p>\n

Analyse by HPLC<\/h3>\n

The chromatographic analysis examines the purity of the sample in our own laboratory.<\/p>\n<\/article>\n

03<\/b><\/p>\n

Document the result<\/h3>\n

Test method, sample and measured result are brought together in the certificate of analysis.<\/p>\n<\/article>\n

04<\/b><\/p>\n

Make it transparent<\/h3>\n

Available quality information is communicated in a traceable way at product or batch level.<\/p>\n<\/article>\n<\/div>\n<\/div>\n<\/section>\n

\n
\n
Reading a COA<\/span><\/p>\n

What does a certificate of analysis contain?<\/h2>\n

A Certificate of Analysis \u2013 COA for short \u2013 summarises the essential details of a laboratory test. What matters is not just a percentage figure, but the relationship between sample, method, date and result.<\/p>\n<\/div>\n

\n
Sample designation<\/span>Which sample was examined?<\/strong><\/div>\n
Test method<\/span>How was it measured?<\/strong><\/div>\n
Result<\/span>Which purity was determined?<\/strong><\/div>\n
Date \/ reference<\/span>When and under which ID?<\/strong><\/div>\n<\/div>\n<\/div>\n<\/section>\n
\n
Important context<\/span><\/p>\n

What HPLC says \u2013 and what it does not.<\/h2>\n
\n
\n

HPLC purity<\/h3>\n

HPLC describes the relative share of the detected main component within the sample examined.<\/p>\n<\/article>\n

\n

No claim of effect<\/h3>\n

A purity figure is not a statement about medical effect, suitability or safety of use.<\/p>\n<\/article>\n

\n

Batch reference counts<\/h3>\n

A certificate is most meaningful when the sample and the batch on offer are clearly linked to one another.<\/p>\n<\/article>\n<\/div>\n<\/div>\n<\/section>\n

\n
\n

Do you have questions about a quality document?<\/h2>\n

We help with the assignment and explain where to find the relevant details.<\/p>\n

Get in touch \u2192<\/a>To the library<\/span><\/div>\n

FOR RESEARCH USE ONLY \u00b7 NOT FOR USE IN OR ON THE HUMAN BODY<\/strong><\/small><\/div>\n<\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Quality & Lab Testing Don’t trust.Verify. Quality is only worth something if it is documented in a way that can be traced. That is why we rely on batch-level assignment […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2979","page","type-page","status-publish","hentry"],"yoast_head":"\nQuality, COAs & Lab Testing | Pept\u00e9lia<\/title>\n<meta name=\"description\" content=\"How Pept\u00e9lia documents identity, purity and batch consistency: certificates of analysis, in-house HPLC and UV\/Vis testing you can trace.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/peptelia.com\/en\/product-quality-testing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pept\u00e9lia Qualit\u00e4t & Laborpr\u00fcfung\" \/>\n<meta property=\"og:description\" content=\"Nachvollziehbare COAs und chargenbezogene Qualit\u00e4tsdaten.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/peptelia.com\/en\/product-quality-testing\/\" \/>\n<meta property=\"og:site_name\" content=\"Pept\u00e9lia\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-24T08:02:18+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/peptelia.com\\\/en\\\/product-quality-testing\\\/\",\"url\":\"https:\\\/\\\/peptelia.com\\\/en\\\/product-quality-testing\\\/\",\"name\":\"Quality, COAs & Lab Testing | Pept\u00e9lia\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/peptelia.com\\\/en\\\/#website\"},\"datePublished\":\"2026-01-25T18:43:16+00:00\",\"dateModified\":\"2026-09-24T08:02:18+00:00\",\"description\":\"How Pept\u00e9lia documents identity, purity and batch consistency: certificates of analysis, in-house HPLC and UV\\\/Vis testing you can trace.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/peptelia.com\\\/en\\\/product-quality-testing\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/peptelia.com\\\/en\\\/product-quality-testing\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/peptelia.com\\\/en\\\/product-quality-testing\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Start\",\"item\":\"https:\\\/\\\/peptelia.com\\\/en\\\/peptelia\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Quality & Lab Testing\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/peptelia.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/peptelia.com\\\/en\\\/\",\"name\":\"Pept\u00e9lia\",\"description\":\"Peptide GLP-1, GLP-2 & GLP-3 \u2013 COA-verifiziert\",\"publisher\":{\"@id\":\"https:\\\/\\\/peptelia.com\\\/en\\\/#organization\"},\"alternateName\":\"Peptelia Peptides\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/peptelia.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/peptelia.com\\\/en\\\/#organization\",\"name\":\"Pept\u00e9lia\",\"url\":\"https:\\\/\\\/peptelia.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/peptelia.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/peptelia.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/peptelia-logo-blue-r.png.webp\",\"contentUrl\":\"https:\\\/\\\/peptelia.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/peptelia-logo-blue-r.png.webp\",\"width\":300,\"height\":254,\"caption\":\"Pept\u00e9lia\"},\"image\":{\"@id\":\"https:\\\/\\\/peptelia.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Quality, COAs & Lab Testing | Pept\u00e9lia","description":"How Pept\u00e9lia documents identity, purity and batch consistency: certificates of analysis, in-house HPLC and UV\/Vis testing you can trace.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/peptelia.com\/en\/product-quality-testing\/","og_locale":"en_US","og_type":"article","og_title":"Pept\u00e9lia Qualit\u00e4t & Laborpr\u00fcfung","og_description":"Nachvollziehbare COAs und chargenbezogene Qualit\u00e4tsdaten.","og_url":"https:\/\/peptelia.com\/en\/product-quality-testing\/","og_site_name":"Pept\u00e9lia","article_modified_time":"2026-09-24T08:02:18+00:00","twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/peptelia.com\/en\/product-quality-testing\/","url":"https:\/\/peptelia.com\/en\/product-quality-testing\/","name":"Quality, COAs & Lab Testing | Pept\u00e9lia","isPartOf":{"@id":"https:\/\/peptelia.com\/en\/#website"},"datePublished":"2026-01-25T18:43:16+00:00","dateModified":"2026-09-24T08:02:18+00:00","description":"How Pept\u00e9lia documents identity, purity and batch consistency: certificates of analysis, in-house HPLC and UV\/Vis testing you can trace.","breadcrumb":{"@id":"https:\/\/peptelia.com\/en\/product-quality-testing\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/peptelia.com\/en\/product-quality-testing\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/peptelia.com\/en\/product-quality-testing\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Start","item":"https:\/\/peptelia.com\/en\/peptelia\/"},{"@type":"ListItem","position":2,"name":"Quality & Lab Testing"}]},{"@type":"WebSite","@id":"https:\/\/peptelia.com\/en\/#website","url":"https:\/\/peptelia.com\/en\/","name":"Pept\u00e9lia","description":"Peptide GLP-1, GLP-2 & GLP-3 \u2013 COA-verifiziert","publisher":{"@id":"https:\/\/peptelia.com\/en\/#organization"},"alternateName":"Peptelia Peptides","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/peptelia.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/peptelia.com\/en\/#organization","name":"Pept\u00e9lia","url":"https:\/\/peptelia.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/peptelia.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/peptelia.com\/wp-content\/uploads\/2026\/09\/peptelia-logo-blue-r.png.webp","contentUrl":"https:\/\/peptelia.com\/wp-content\/uploads\/2026\/09\/peptelia-logo-blue-r.png.webp","width":300,"height":254,"caption":"Pept\u00e9lia"},"image":{"@id":"https:\/\/peptelia.com\/en\/#\/schema\/logo\/image\/"}}]}},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/peptelia.com\/en\/wp-json\/wp\/v2\/pages\/2979","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/peptelia.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/peptelia.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/peptelia.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/peptelia.com\/en\/wp-json\/wp\/v2\/comments?post=2979"}],"version-history":[{"count":2,"href":"https:\/\/peptelia.com\/en\/wp-json\/wp\/v2\/pages\/2979\/revisions"}],"predecessor-version":[{"id":2986,"href":"https:\/\/peptelia.com\/en\/wp-json\/wp\/v2\/pages\/2979\/revisions\/2986"}],"wp:attachment":[{"href":"https:\/\/peptelia.com\/en\/wp-json\/wp\/v2\/media?parent=2979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}